During the early summer season, we get a sneak peek into the lives of high school girls. Shiozaki Haruno, a 17-year-old, is deeply devoted to her reliable HONDA Giorno motorcycle. Despite residing in an isolated highland area, Haruno craves the fast-paced lifestyle of the big city. Fortunately, fate intervenes when guests staying at her parents' boardinghouse inspire her to chase after her aspirations.